Pumping unit.



G. D. LOUD.

PUMPING UNIT.

APPLICATION FILED 050.5, 1914.

Lwg.. PaIenIedJan. 25, 1916.

` 2 SHEETS-SHEET I.

6.1).l LOUD.

PUMPING UNIT.

APPLICATION FILED DEC. 5,1914.

Patented Jan. 25, 1916.

2 SHEETS-SHEET 2.

' pag.4.

WUMM- THE COLUMBIA PLANQGRAPH co.. WASHINGTON, D. C.

GEORGEKD. LOUD, 0F BOSTON, MASSACHUSETTS.

'.PUMPING UNIT.

Specification of Letters Patent.

Patented Jan. 25, 191.6.

Application led. December 5, 1914. Serial No. 875,698.

T0 all whom it may concern:

Be it known that ll, GEORGE D. LOUD, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Pumping Units; and l do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains t0 make and use the same.

rllhe present invention relates to pumping units and more particularly to portable units comprising an internal combustion motor and a reciprocatingpump arranged in compact relation to one another.

@ne object of the present invention is to provide a portable pumping unit comprising an internal combustion motor and a hydraulic pump supported upon a single base and having an improved construction and arrangement of the various operating parts to provide a simplified and compact form of pumping unit.

T he type of pumping unit most generally employed where it is necessary that the unit be of a portable nature comprises a diaphragm pump which is manually actuated by an oscillating lever. This type of pump may be used to advantage as it is conveniently transported from place to place and will pump liquid which contains grit, sediment, and even pieces of stone, but upon the other hand, the capacity is relatively small and requires the constant attention of two men to operate the pump. It is very desirable, therefore, that this type of pump be operated mechanically and that the motor is so arranged that it may heapplied to manually actuated pumps without substantial change in the pumps themselves. i

A furtherV object of the invention, therefore, Aconsists in a self contained motor which may be detachably secured to a pump of this character in placeof the manually operated mechanism without the necessity of altering the pump itself.

With the above objects in view the several features of the invention consist in certain novel features of construction, combinations and arrangements o f parts hereinafter described and claimed, 'the advantages of which will be obvious to those skilled in the art from the following description.

In the accompanying drawings illustrating the preferred form of the invention; Figure l represents a longitudinal section in elevation of the pumping unit; Fig. 2 is an elevation partly in section taken at right angles to the view shown in Fig. 1; F ig. 3 is an elevation partly in section of the motor and connected mechanism adapted for attachment to the pump casing; and Fig. d is a sectional elevation of the dia phragm pump showing in dotted outline the manually operated mechanism which is removed `from the pump to permit the application ofthe motor.

lThe pumping unit shown in the illustrated embodiment of the invention comprises a pump having a casing, a diaphragm supported in the casing, suction and delivery valves, and a motor having a crank case adapted for attachment directly to the pump casing, a pair of crank shafts connected by reducing gearing, and a crosshead having provision for connection to the diaphragm of the pump. The provision of the motor and connected mechanism so constructed that they may be readily attached toa pump enables the pump to be operated either by hand or mechanically, and so facilitates the interchanging of the two mechanisms that the pumping unit may De readily changed from hand operated to motor operated, or vice versa.

A. well-known type of diaphragm pump is shown in the drawings comprising a pump casing cpen at the upper end and formed of two sections indicated at l and 2, respectively and having the edges of a flexible diaphragm 3 clamped between them by clamping bolts 4f. As shown clearly in Fig. l of thel drawings, the pumped water is taken in through a suction valve G and is delivered Vby a valve indicated at 7 which islocated in the center of the movable diaphragm. With this construction the water is delivered above the diaphragm through the open `upper' end of the pump. The fiexible diaphragm is of an annular form and is clamped at its inner edges by the clamping heads 8 and 9 which are secured together in the usual manner by elongated clamping bolts l0 supported in standards 11 and adapted for attachment at their upper ends to a reciprocating crosshead. The ends of the crosshead pass over the bolts and are secured to the standards through clamping nuts 12. ln the ordinary type of hand operated pump the crosshead is of the shape .i struction and arrangement detachably con- -nects the operating mechanism tothe pump Vshown iii-dot and dashoutline in VF ig. 4

and is engaged by the toe of an oscillatory lever fulcrumed upon any. one of a series of inturned brackets or supports 15 projecting from the upper edge of the pump casing. These supports are of the usual form and are .slotted to receive VT-shaped bolts, as shown clearly in the drawings. This conl to remove the hand operated lever by loosening the T bolt, and the crosshead by removing the two clampingvnuts 12. @The motor and connectedmechanism comprises an ineternal combustion motor and crosshead ladapted for connectionfdirectly to the clampingibolts 10, and acrank case for the motorhaving provision for attachment directly to the bracketsy 15, the connecting means being arranged to position the motor properly with relation, to the pump and secure it firmly in this position to :withstand any vibration which may occur.

Themotor comprisesan air cooled power cylinder l'having the usual cooling fins 17, connecting rodlS, and acrank shaft 19`jour naled ina crank case 20. As it is advisable to drive the pump at a slower speed than the normal speed of operationof the motor, speed reducing Vmechanism 1s embodied 1n the motor, and a pump actuating crank shaft lis connected to the motor crank shaft through the reducing gearing. To this fend a second crank shaft 22 is journaledV in the crank case at right Pangles to and above the crank shaft 19 and is driven thereby through the intermeshing worm gears 23 and 24. The `motor crank shaft 19 is provided upon one end with a fly wheel 25 and is supported at the opposite end by a thrust bearing in- -f dicated at 26 to counteract the thrust imlthe crank shaft.

' parted by the 'action of theworm gearing.

The motor receives its lubrication in the usual'manner from a lubricating medium contained in thepit 2 8 lof the crank case and splashed therefrom by the rotation of As the reducing gearing and crankshaft 22 are alsosupported in the same casing, the same lubricating medium also conveniently serves for the lubrication of these parts. Asshown clearly in Fig. 1 vof the drawings, the shaft 22 projects from the casing 20 and is provided upon its opposite endswith cranks 30 which areprovided with connecting rods 31. The rods 31 are connected tothe diaphragm by a crosshead 32 and a cross pin 33 supported transversely in A the crosshead connected at v-nected to the crankshaft 22 and forms an integral part of the motor, and by slipping the ends of the crosshead over the clamping bolts and adjusting the clamping nuts 12'the motor is readily connected to the pump without changing the latter. In order to guide the crosshead in its movements and prevent an undue vibration of the apparatus Voppositely disposed vertical guides 35 andy 36 are secured to the crank case and engage with and form bearings for the enlarged ends 37 of the connecting rods, as shown clearly in Fig. 2. The crank case is provided with means for enabling the motor to be `readilv attached to the pump and for causingthe motor to be properly positioned with relation to the pump so that the operating connections of the pump and motor may be properly connected with one another. To this end a depending leg 40 is formed upon the crank casing adjacent to the ily wheel,rand a pair of depending legs L12 are formed upon opposite sides of the crank case. Each of these legs is provided with an out-turned foot 43 which is slotted to receive T-shaped clamping bolts 45 engaging with the under side of the brackets 15 to join the motor and pump rigidly together. The supporting and connecting legs are arranged to aline with the three supporting brackets when the motor and pump are in operative relation to one another, thus causing the crosshead of the motor to be readily connected with the diaphragm of the pump without the necessity for adjustment in cach individual case.

It will be obvious in view of the foregoing description that with this construction the motoror the hand operated mechanism may be connected directly to the diaphragm of the pump with equal facility by simply removing the crosshead and T-shaped clamping bolts and replacing them by a new crosshead and clamping bolts. Furthermore, it will be observed that when the pump is operated .by the motor no enlargement or eX- tension of the base is necessary and he unit is even more compact than when operated by hand as the mctor is supported entirely bythe pump casing and reouires substantially no greater floor room than the pump casing itself.

lVhile it is preferred to employ the specific construction and arrangement of parts shown and described, it will be understood that this construction and ar 1angement is not essential except so far as specitied in the claims, and may be changed or modified withoutdeparting from the broader features of the invention.

The invention having been described, what is claimed is:

1. A pumping unit, having in combination, a pump casing, a diaphragm supported in the casing, a motor having a crank case detachably secured to and supported by the pump case, a motor crank shaft and a pump crank shaft supported in the crank case directly above the diaphragm, reducing gears connecting the two shafts, a crosshead located outside of the crank case and connected to the diaphragm, and connections between the crosshead and pump shaft.

2. A pumping unit, having in combination, a pump casing, a movable pump mem* ber supported in the casing, a motor crank case, a motor crank shaft and a pump crank shaft supported at right angles to one another in the crank case, worm gearing connecting the two shafts, a crosshead secured to the movable member of the pump, and rods connecting the opposite ends of the pump shaft outside of the crank ease with Y the crosshead.

3. A pumping unit comprising al pump casing, a motor crank case detachably secured to and supported by the pump casing, a motor crank shaft and a pump shaft supported in the crank case, reducing gears connecting the two shafts, a connecting rod secured to the pump shaft, and a crosshead supported by the rod outside of the crank case and adapted for attachment to a movable pump member.

il. A pumping unit comprising a pump casing having a series of inturned lugs, a motor crank case, a plurality of legs formed upon the crank case and arranged to cooperate with the corresponding lugs formed upon the pump casing, a motor crank shaft and a pump crank shaft supported in the crank case, connecting rods secured to the pump shaft outside of the crank case, a

crosshead supported by the connecting rods,

and guide members supported by the crank I case and cooperating with the crosshcad.

5. A pumping unit, having in combination, a pump casing provided with a series of nturned supports at its upper edge, a movable diaphragm supported in the casing, a motor crank case having feet cooperating with the supports to support the crank case upon the pump casing above the pump, a motor crank shaft, a crosshead secured to the diaphragm, and connections between the motor crank shaft and the crosshead.

6. A pumping unit, having in combination, a pump casing open at its upper end, a movable pump member supported in the casing, a suction valve, a delivery valve arranged to discharge water above the pumpv member through the open upper end of the pump casing, a motor having a crank case detachably secured to and supported above the pump casing, a motor crank shaft supported in the crank case, and detachable connections between the movable pump member and the crank shaft.

7. A pumping unit, having in combination, a pump casing open at its upper end, a diaphragm supported in the casing, a motor having a crank case detachably secured to and supported above the pump casing, a motor crank shaft supported in the crank case, a crosshead detachably secured to the diaphragm outside of the crank case, and connections between the diaphragm and the crank shaft.

GEORGE D. Lonn.

W'itnesses BURTON WV. CARY, MAY A. HURLEY.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

